President Barack Obama stands with Secretary of State Hillary Rodham Clinton during the transfer of remains ceremony at Joint Base Andrews, Md., Sept. 14, marking the return to the United States of the remains of the four Americans killed in Benghazi, Libya (Pete Souza)

President Obama talks with Mario Orosa, a native Ohioan, before dinner at the Smith Commons Dining Room and Public House in Washington, DC, on October 12, 2012. Orosa was one of the three winners of the final “Dinner with Barack” fundraising contest. The winners are Kimberley Cathey, Mario Orosa and Joe Laliberte (UPI/Pete Marovich)

Greg Sargent (Washington Post): Romney’s claims about jobs continue to crumble: A colleague emails: “Can you remember another time a candidate did as much damage to himself as Romney has done in the last 24 hours? I cannot.”

In that amount of time, two things happened. First, Romney has provided Dems with the perfect fodder for misleading but potentially devastating attacks on his primary vulnerability – his corporate past, which Dems will paint as emblematic of the predatory and unfettered capitalism that has produced untold economic misery for millions.

And second, the national political press – and even some leading Republicans and conservatives – have come around to the conclusion that the foundation of the whole case driving his candidacy, his career as an alleged “job creator” at Bain Capital, is based on a series of claims that are entirely untenable.

Here’s the latest, from Glenn Kessler, who weighs in with an epic fact check of Romney’s claim that he created over 100,000 jobs at Bain, and concludes that it’s unsupportable on every level…..

Greg Sargent: Conservative doubts rising about Obama: A key dynamic to watch: The assault on Romney’s Bain years is causing rising alarm in conservative circles. Jonah Goldberg gives voice to the worries, suggesting we now know that Romney really may not be as electable in a general election against Obama as we keep hearing.

Key footnote: Goldberg suggests that rising doubts about Romney’s electability may be what triggers a brokered convention.

Greg Sargent (Washington Post): Newt Gingrich can’t stop spewing falsehoods, but he’s Very Serious: My pick for read of the morning is Post fact checker Glenn Kessler’s funny and absolutely brutal debunking of, well, pretty much everything Newt said in launching his bid for president. The man lies non-stop, but hey, he’s Serious and has Big Ideas, so who cares?

The Fact Checker (Washington Post): Newton Leroy “Newt” Gingrich is back! The former House speaker threw his hat in the presidential ring Wednesday with an appearance on Fox’s “Sean Hannity Show.”

…There were so many gems in Gingrich’s appearance that we will pick out the choice comments that cry out for fact-checking. We reached out to two of his spokesmen with questions and requests for documentation, but did not get a response….